Moderate

* WHAT...Large breaking waves of 8 to 12 feet in the surf zone and dangerous rip currents. * WHERE...North and east facing reefs of the Marianas. * WHEN...For the High Surf Advisory, until 4 PM ChST this afternoon. For the High Rip Current Risk, through Sunday afternoon. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Elevated trade swell is being reinforced by

* WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...In Kansas, Rawlins, Thomas, Logan, and Wichita Counties. In Nebraska, Hitchcock County. * WHEN...From 10 PM this evening to 9 AM CDT Thursday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...If winds can remain lighter and clouds clear then lows may temperatures may fall into the mid to upper 20s.

* WHAT...Sub-freezing temperatures as low as 26 expected. * WHERE...Portions of east central and northeast Colorado, northwest and west central Kansas, and southwest Nebraska. * WHEN...From 9 PM MDT /10 PM CDT/ this evening to 8 AM MDT /9 AM CDT/ Thursday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...If winds can remain lighter and clouds clear then lows may temperatures may fall into the low to mid 20s with

At 1006 AM CDT, Doppler radar was tracking a strong thunderstorm near Joppa, or near Bertram, moving east at 50 mph. HAZARD...Wind gusts up to 50 mph and nickel size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Georgetown, Granger, Serenada, Bartlett, Liberty Hill, Jarrell, Florence, Weir, Georgetown Dam, Sun City, Mahomet, Andice, Theon,

* WHAT...Sub-freezing temperatures in the mid 20s to lower 30s. * WHERE...Animas River Basin, Four Corners/Upper Dolores River, San Juan River Basin, Central Colorado River Basin, Central Gunnison and Uncompahgre River Basin, and Debeque to Silt Corridor. * WHEN...From midnight tonight to 9 AM MDT Thursday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold.

* WHAT...Sub-freezing temperatures in the 20s. * WHERE...Central Yampa River Basin and Lower Yampa River Basin. * WHEN...From midnight tonight to 9 AM MDT Thursday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold.

At 923 AM CDT, Doppler radar was tracking a strong thunderstorm near Doss, or 19 miles south of Mason, moving east at 40 mph. HAZARD...Wind gusts up to 50 mph and penny size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Cherry Spring, Crabapple, Doss, Harper, and Enchanted Rock State Natural Area. If outdoors, consider seeking shelter inside a building.

* WHAT...Snow tapering off this morning. Additional snow accumulations up to two inches. * WHERE...Grand and Summit Counties Below 9000 Feet, South Park, Byers, and Limon. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Snow covered roads in mountain areas will make travel hazardous. Plan on slippery road conditions. Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org.

* WHAT...Snow. Additional snow accumulations between 3 and 8 inches. * WHERE...Northern Sangre de Cristo Mountains Between 8500 and 11000 Feet, Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet, and Wet Mountains between 6300 and 10000 Feet. * WHEN...Until midnight MDT tonight. * IMPACTS... Travel could be difficult. Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.

* WHAT...Snow. Additional snow accumulations between 3 and 5 inches. * WHERE...Wet Mountain Valley, and Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet. * WHEN...Until midnight MDT tonight. * IMPACTS...Travel could be difficult. Heavy, wet snow could bring down trees and power lines. Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.